From 2dd787a3d097e942e7be38aa9d4525fd7b2c1b21 Mon Sep 17 00:00:00 2001
From: Andy Kluger <AndydeCleyre@users.noreply.github.com>
Date: Thu, 25 Mar 2021 04:47:56 -0400
Subject: [PATCH] Restore ability to set compile cache with env var
 PIP_TOOLS_CACHE_DIR (#1368)

Fixes bug introduced in GH-1238 and exposed by GH-1357
---
 piptools/scripts/compile.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/piptools/scripts/compile.py b/piptools/scripts/compile.py
index 8534a0b1f..6c036d5ae 100755
--- a/piptools/scripts/compile.py
+++ b/piptools/scripts/compile.py
@@ -185,7 +185,9 @@ def _get_default_option(option_name: str) -> Any:
     "--cache-dir",
     help="Store the cache data in DIRECTORY.",
     default=CACHE_DIR,
+    envvar="PIP_TOOLS_CACHE_DIR",
     show_default=True,
+    show_envvar=True,
     type=click.Path(file_okay=False, writable=True),
 )
 @click.option(